Robert Mueller Municipal Airport, Austin, Texas, May 1972 - Robert Mueller Municipal Airport was the first civilian airport built in Austin, Texas, operating from 1930 to 1999. It was replaced as Greater Austin's main airport by the Austin Bergstrom International Airport. Located a few miles northeast of downtown Austin, the airport was named after Robert Mueller, a city commissioner who had died while in office in January 1927. Mueller was identified with the three letter "AUS" airport code and this "AUS" code was then assigned to the Austin Bergstrom International Airport in 1999 - Stock Image.